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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Ru·mi·cin n. Chem. A yellow crystalline substance found in the root of yellow dock (Rumex crispus) and identical with chrysophanic acid.
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From: Webster's Revised Unabridged Dictionary (1913)

 Dock n.  Bot. A genus of plants (Rumex), some species of which are well-known weeds which have a long taproot and are difficult of extermination.
 Note: ☞ Yellow dock is Rumex crispus, with smooth curly leaves and yellow root, which that of other species is used medicinally as an astringent and tonic.